so my bike has less than 2 hours on it and the end cap/screen has gone missing. Is it the actual spark arrestor or is it just a noise reducer? i wouldnt bother with it if its just for noise, but i do want to ride in the forest and dont want a ticket from a ranger for no spark arrestor..

so my bike has less than 2 hours on it and the end cap/screen has gone missing. Is it the actual spark arrestor or is it just a noise reducer? i wouldnt bother with it if its just for noise, but i do want to ride in the forest and dont want a ticket from a ranger for no spark arrestor..

It's for noise. The spark arrestor is down deeper and ain't coming out.

I took out the restrictor inside and somehow my screen also fell out on a ride, guess i didnt screw it back on tight enough. Anyhow noise does slightly increase but still very respectable. I get passed by some of those crotch rockets that are much more loud. Theres also a vid on youtube with a sound test with the above mods, it ranged 94-95 db.

A pic of the AWD build as it sits, about 60% complete. Taking my time, 1st KTM so familiarizing myself with not only the bike, and setup, decorking, emissions delete, aftermarket armor, suspension, controls and other parts, but also the AWD conversion.

Question: Is the black plastic housing in the coolant lines above the crankcase a thermostat? Can I eliminate it? With factory XCW parts, or an aftermarket line kit? Thanks in advance.

Also, as above the screen in the exhaust tip is NOT the spark arrestor? It's for noise supression? I wired it on. Cut out the internal restrictor.

I thought the consensus was the screen at the tip was more of a dissipator to keep from melting the stock turn signal. I'm sure it helps with noise and may also serve as a secondary spark arrestor. It might also add enough restriction (coupled with the inner restriction) to run stock jetting almost safely.

I think the real spark arrestor is a Krizman (sp?) type way down in the muffler.